Postemployment Benefits Pension Plans - Net Cost/(Benefit) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2022	Jun. 26, 2021	Jun. 25, 2022	Jun. 26, 2021
Defined Benefit Plan Disclosure [Line Items]
Amortization of postemployment benefit plans prior service costs/(credits)	$ (3)	$ (1)	$ (7)	$ (3)
U.S. Plans | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	3
Interest cost	24	21	48	43
Expected return on plan assets	(49)	(45)	(97)	(90)
Amortization of postemployment benefit plans prior service costs/(credits)	0	0	0	0
Amortization of unrecognized losses/(gains)	0	0	0	0
Settlements	(1)	(6)	(1)	(6)
Special/contractual termination benefits	0	(1)	0	3
Net postretirement cost/(benefit)	(25)	(30)	(48)	(47)
Non-U.S. Plans | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	4	7	8
Interest cost	9	8	19	15
Expected return on plan assets	(17)	(25)	(36)	(48)
Amortization of postemployment benefit plans prior service costs/(credits)	0	1	0	1
Amortization of unrecognized losses/(gains)	1	1	1	1
Settlements	0	0	0	0
Special/contractual termination benefits	0	0	0	0
Net postretirement cost/(benefit)	$ (4)	$ (11)	$ (9)	$ (23)